Rep. Don Young (R-AK) "Twitterjacked."

Young's office says an imposter has apparently been using the identity of the Alaska Republican to post "tweets" or messages on the social networking site Twitter.

Twitter is where people can send "microblogs" of up to 140 characters. Many users dispatch tweets to tell others what they're doing over the course of the day.

Young spokeswoman Meredith Kenny says Young does not use Twitter and "the messages posted seem to be the work of someone with a little too much free time on their hands."

Kenny called the tweets "preposterous and outrageous." She says they are trying to get Twitter to take down the faux messages.

The Young imitator apparently started sending the posts on Monday. One indicated that Rep. Michelle Bachmann (R-MN) was preparing to introduce Articles of Impeachment against President Obama. Bachmann has introduced no such articles.